Session Index

S5. Optical Design, Testing, and Engineering

Optical Design, Testing, and Engineering V
Saturday, Dec. 2, 2023  16:00-17:00
Presider: Prof. Shih-Hsin Ma (Feng Chia University, Taiwan)
Room: 92225 (2F)
16:00 - 16:15
Manuscript ID.  0964
Paper No.  2023-SAT-S0505-O001
Guo-Fong Hong In-Situ Pineapple Harvesting Decision and 3D Positioning Using Improved YOLOv7 with RGB-D Camera
Guo-Fong Hong, Chun-Yu Lin, Sumesh Nair, Shean-Jen Chen, National Yang Ming Chiao Tung University (Taiwan)

Pineapples are an important agricultural economic crop in Taiwan, and it is also the top exported fruit from Taiwan. In pineapple cultivation, considerable human resources are required to protect pineapples from excessive solar radiation, which could otherwise lead to deterioration and impact the harvest. Therefore, this study proposes a system by which to automate the detection of unripe, export, and domestic pineapples. The proposed improved YOLOv7 architecture is capable of detecting pineapples within intricate in the pineapple fields, achieving accuracy of more than 95%, and precise pineapple harvesting is achieved through the use of the depth camera for accurate positioning.

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16:15 - 16:30
Manuscript ID.  0844
Paper No.  2023-SAT-S0505-O002
Jonathon David White Staff Reflections on Dynamic Whites Lighting System
Nafia Al-Mutawaly, McMaster University (Canada); Jonathon David White, Yuan Ze University (Taiwan), McMaster University (Canada)

Dynamic whites lighting systems that attempt to mimic the 24-hour changes in the intensity and spectrum of sunlight have been installed in several venues in Canada. These systems provide uniform indirect lighting throughout the room. Staff and visitors were requested to complete short surveys regarding their satisfaction with this system. The survey results were compared with a similar survey conducted for the existing lighting. While there were exceptions, the dynamic system was preferred by the majority of staff

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16:30 - 16:45
Manuscript ID.  0165
Paper No.  2023-SAT-S0505-O003
Yu-Yen Tsai Optical design of Bragg reflective mirrors for EUV photolithography
Yu-Yen Tsai, Ting-Wei Chen, National Pingtung University (Taiwan)

In this article. we investigate the optical characteristics of reflective EUV mirrors for the
application of lithography for 7nm node and below. By using the conventional quarter-wavelength
stacked Bragg reflective configuration of Mo/Si multilayers centered at soft x-ray 13.5nm, the
maximum reflection is numerically computed to be approximately 0.71, which is consistent to the
typical values reported by ASML. The FWHM bandwidth is 0.7 nm. In our numerical simulation,
other potential Si-based metal reflective mirrors are also reported to replace Mo/Si stacked
multilayers in order to harvest more EUV light inside the scanners.

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16:45 - 17:00
Manuscript ID.  0332
Paper No.  2023-SAT-S0505-O004
Chin-wei Lin Controlling liquid crystal droplets in aqueous solution
Chin-wei Lin, An-I Hsu, National Yang Ming Chiao Tung University (Taiwan); Wang-Yang Li, CM Visual Technology Corporation (Taiwan); Shie-Chang Jeng, National Yang Ming Chiao Tung University (Taiwan)

Optoelectronic tweezers (OET) by using the light-induced dielectrophoresis are applied to control liquid crystals (LC) droplets with a velocity of 180 μm/s for a 30-μm-diameter by applying 6.5 V at 20 kHz. The ability to control anisotropy and birefringent LCs by OET is promising for finding more photonic applications.

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